update

config/database.yml

@@ -13,21 +13,19 @@ default: &default
   adapter: mysql2
   encoding: utf8
   pool: 5
+  username: root
+  password:
 
 development:
   <<: *default
   database: list_share_app_development
-  username: root
-  passwords:
 
 # Warning: The database defined as "test" will be erased and
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
 test:
   <<: *default
   database: list_share_app_test
-  username: root
-  password:
 
 # As with config/secrets.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is